<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>栅格系统</title>
    <style>
        div{
            margin-top: 20px;
        }

        img{
            width: 100%;
            height: 100%;
        }
    </style>
<!--    <link rel="stylesheet" href="pc/dist-3.4.1/css/bootstrap.css">-->
    <link rel="stylesheet" href="pc/dist-4.4.1/css/bootstrap.css">
    <script src="../../jquery-js/jquery.js"></script>
    <script src="pc/dist-3.4.1/js/bootstrap.js"></script>
</head>
<body>
<div class="container">
    <div class="row">
        <div class="col-md-3 col-xl-6 col-6"><img src="img/1.jpeg" alt=""></div>
        <div class="col-md-3 col-xl-6 col-6"><img src="img/2.jpg" alt=""></div>
        <div class="col-md-3 col-xl-6 col-6"><img src="img/3.jpg" alt=""></div>
        <div class="col-md-3 col-xl-6 col-6"><img src="img/4.jpg" alt=""></div>
    </div>
    <div class="row">
        <div class="col-md-3 col-xl-6 col-6"><img src="img/5.jpeg" alt=""></div>
        <div class="col-md-3 col-xl-6 col-6"><img src="img/6.jpg" alt=""></div>
        <div class="col-md-3 col-xl-6 col-6"><img src="img/7.jpg" alt=""></div>
        <div class="col-md-3 col-xl-6 col-6"><img src="img/8.jpeg" alt=""></div>
    </div>
</div>
</body>
</html>